Graphical user interface for a display screen or portion thereof



The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawings will be provided by the Office upon request and payment of the necessary fee.

FIG. 1 is a front view of a graphical user interface for a display screen or portion thereof showing our new design; and,

FIG. 2 is a front view of a second embodiment thereof.

The broken line showing of the display screen is not part of the claimed design. 

The ornamental design for a graphical user interface for a display screen or a portion thereof, as shown and described. 